Now you have raw materials that you can begin to work with using the critical mind that you've persuaded to sit on the side and watch quietly. Most likely, you will believe that this will take more time than you actually have and you will end up staring blankly at the pages as the deadline draws near.
Instead of staring at a blank start filling it with words no matter how bad. Halfway through you available time, stop and rework your raw writing into something closer to finished product. Move back and forth until you run out of time and the final result will most likely be far better than your current practices.